Perhaps you should try some spelling variations:
sang tao » hang tai
tu sach » thu sach, su sach, te sach
dan dai » dat dai, can dai, dan dat
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
tao hoi » tao khoi, tao boi, tay hoi
hieu ve » hieu van
y sang » _ sang, duy sang
tuc va » thuc va, tuc xa, duc va
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y sang tao hoi. ((hieu ve) or (hieu va)) cac ((tuc va) OR (truc va)) dan dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y sang tao hoi. ((hieu ve) OR (hieu va)) cac ((tuc va) OR (truc va)) dan dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y sang tao hoi. ((hieu ve) or (hieu va)) cac ((tuc va) OR (truc va)) dan dai cua te*".